why does my Ford Explorer Fifth Generation (2011-2019) brake pedal feel spongy

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

574 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix a spongy brake pedal in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems.
•Ensure the vehicle is securely lifted and supported before working on the brakes.

Symptoms

•Spongy or soft brake pedal feel
•Increased stopping distance
•Brake warning light illuminated on the dashboard
•Unusual noises when pressing the brake pedal, such as squeaking or grinding
•Brake fluid leakage under the vehicle

Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for any visible leaks in brake lines, calipers, or around the master cylinder.
3
Inspect the brake pads and rotors for wear or damage.
4
Test brake booster operation by pressing the brake pedal with the engine off and then starting the engine; the pedal should drop slightly.
5
Use a brake line pressure gauge to check for consistent pressure throughout the braking system.
6
Scan for error codes using an OBD-II scanner to check for any ABS-related issues.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Brake fluid
•Funnel
•Brake bleeder kit
•Clear tubing
•Socket set
•Wrenches
•Torque wrench

Parts Required

•Brake pads (if worn)
•Rotors (if damaged)
•Brake fluid

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Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for any visible leaks in brake lines, calipers, or around the master cylinder.
3
Inspect the brake pads and rotors for wear or damage.
4
Test brake booster operation by pressing the brake pedal with the engine off and then starting the engine; the pedal should drop slightly.
5
Use a brake line pressure gauge to check for consistent pressure throughout the braking system.
6
Scan for error codes using an OBD-II scanner to check for any ABS-related issues.

Solution

1. Preparation

Gather tools and parts required for the repair.
Park the vehicle on a flat surface and engage the parking brake.
Wear safety goggles and gloves for protection.

2. Check and Refill Brake Fluid

Tools Required: Brake fluid, funnel.
Open the master cylinder reservoir cap.
Inspect the fluid level; if low, top off with the appropriate brake fluid (usually DOT 3 or DOT 4).
Replace the cap securely.

3. Bleed the Brake System

Tools Required: Brake bleeder kit, clear tubing, container for old fluid.
Locate the brake bleeder valve on each brake caliper.
Attach the clear tubing to the bleeder valve and place the other end in a container.
Have an assistant press the brake pedal several times and hold it down.
Open the bleeder valve to let air and fluid escape, then close it before the pedal is released.
Repeat this process for each wheel, starting from the furthest wheel from the master cylinder (usually the right rear) to the closest (usually the left front).
Check and refill the master cylinder as needed during the process to avoid introducing air.

4. Inspect and Replace Components (if necessary)

Tools Required: Socket set, wrenches, torque wrench, brake pads, rotors (if needed).
Inspect the brake pads for thickness; replace if they are below the manufacturer's specifications.
Check the rotors for warping or scoring; if damaged, replace them.
Reassemble all components and ensure all fasteners are torqued to manufacturer specifications.